John rides his bike 30km south and then 20km east. How far is he from his starting point?

the y will be in still but your answer will be y x 3

step-by-step explanation:

jk: )

1,407.5 hours

step-by-step explanation:

we first convert all the time to hours and then sum them up.

there are 24 hours in 1 day, in 58 days, there are 24 x 58 = 1,392 hours.

there are 60 minutes in 1 hour, thus, 30 minutes will be equivalent to 30 / 60 = 0.5 hours.

therefore, the number of hours it will take mercury to complete a full rotation is 1,392 + 15 + 0.5 = 1,407.5 hours

(5x-1)^2= (5x)^2-2(5x)×1+(1)^2=25x^2-10x+1